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<table width="100%" summary="page for CrohnD"><tr><td>CrohnD</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Crohn's Disease Adverse Events Data</h2>

<h3>Description</h3>

<p>Data set issued from a study of the adverse events of a drug on
117 patients affected by Crohn's disease (a chronic inflammatory
disease of the intestines).
</p>


<h3>Usage</h3>

<pre>data(CrohnD, package="robustbase")</pre>


<h3>Format</h3>

<p>A data frame with 117 observations on the following 9 variables.
</p>


<dl>
<dt><code>ID</code></dt><dd><p>the numeric patient IDs</p>
</dd>
<dt><code>nrAdvE</code></dt><dd><p>the number of adverse events</p>
</dd>
<dt><code>BMI</code></dt><dd><p>Body MASS Index, i.e., <i>weight[kg] / (height[m])^2</i>.</p>
</dd>
<dt><code>height</code></dt><dd><p>in cm</p>
</dd>
<dt><code>country</code></dt><dd><p>a factor with levels <code>0</code> and <code>1</code></p>
</dd>
<dt><code>sex</code></dt><dd><p>the person's gender, a binary factor with levels
<code>M</code> <code>F</code></p>
</dd>
<dt><code>age</code></dt><dd><p>in years, a numeric vector</p>
</dd>
<dt><code>weight</code></dt><dd><p>in kilograms, a numeric vector</p>
</dd>
<dt><code>treat</code></dt><dd><p>how CD was treated: a factor with levels
<code>0</code>, <code>1</code> and <code>2</code>, meaning placebo, drug 1 and drug 2.</p>
</dd>
</dl>



<h3>Source</h3>

<p>form the authors of the reference, with permission by the original
data collecting agency.
</p>


<h3>References</h3>

<p>Serigne N. Lô and Elvezio Ronchetti (2006).
Robust Second Order Accurate Inference for Generalized Linear Models.
Technical report, University of Geneva, Switzerland.
</p>


<h3>Examples</h3>

<pre>
data(CrohnD)
str(CrohnD)
with(CrohnD, ftable(table(sex,country, treat)))
</pre>


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